Advertising optimization (conditioning service)

We have a customer who is responsible for the service of home air conditioners.The current Google AdWords advertising campaign brought not as many requests as we wanted.There were a lot of non-targeted ones that were linked to the car by air conditioners.In just 2 days optimized the existing customer campaign in the air conditioner niche in the city.The Kiev:
The number of conversions increased by 187%
The conversion cost decreased almost twice.✔✔